package com.acme.bankapp.domain.bank;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import com.acme.bankapp.service.bank.ClientRegistrationListener;

public class Bank {

	private List<Client> clients = new ArrayList<>();
	private List<ClientRegistrationListener> listeners = new ArrayList<>();

	public void addClientRegistrationListener(ClientRegistrationListener listener) {
		listeners.add(listener);
	}

	public void addClient(Client client) throws ClientExistsException {
		for (Client existingClient : clients) {
			if ( client.equals(existingClient) ) {
				throw new ClientExistsException(client);
			}
		}
		
		clients.add(client);

		for (ClientRegistrationListener listener : listeners) {
			listener.onClientAdded(client);
		}
	}
	
	public List<Client> getClients() {
		return Collections.unmodifiableList(clients);
	}

}
